CONTENTS DRAFTING FOR SPEED FORCES AND MOTION R E A DY S E T R A C E ENGINE FRICTION SPEEDING UP GOOD GRIP W E I G H T A N D G R AV I T Y BANKED TURNS AIR’S POWER LIFT MOMENTUM PROTECTION FULL SPEED AHEAD TOY CAR TRACK GLOSSARY WEBSITES INDEX 4 6 8 10 12 14 16 18 20 22 24 26 28 30 31 32
DRAFTING FOR SPEED N O I T C U D O R T N I Engines roar as race cars speed around the track With a track that is miles long there’s plenty of space for the cars to race Yet cars pair up racing one right in front of the other Why Whizzing around the track in tandem makes both cars move faster 4
The race car pairs are drafting When drafting billions of air molecules hit the car in front creating high pressure there The air pushes on the car before rolling across its top toward its rear Low pressure is created at the back of the car which slows the car down When two cars draft the air flow is directed over both cars as if they were one car The first car breaks through high pressure air but is not slowed down by low pressure at its rear The second deals with low pressure at the back but does not have to break through high pressure air at its front So both cars get a boost of speed
